I was hoping for something that explained the part where they get you to pay a higher fare by tracking you on the Web. But maybe an insider site like this wouldn't be willing to talk about that. There are many sites that describe this happening, such as [1]. And I've seen it happen to me: a fare would go up by $50 while I was searching, and opening a private browsing window would make it go back down. [1] http://www.…
I have yet to see real proof that airline companies get you to pay a higher fare by tracking your searches/browsing. While I'm sure you saw a $50 difference, it was likely a slightly different search, which is almost always what happens when people claim they've noticed this.
About a year ago, someone on reddit went out and offered a year of reddit gold for anyone that could, there was nobody: https://www.reddit.com/r/LifeProTips/comments/1ekv6e/lpt_bou...
As recently as last week, someone claimed they had reproduced, but they used slightly different search params and ended up with something totally different: http://www.reddit.com/r/travel/comments/2okml5/for_anyone_pl...
This myth is rife with anecdotal proof, but I've yet to see anything concrete.